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INTANGIBLE ASSETS, NET (Details) - Expected amortization of intangible assets
May 31, 2019
USD ($)
Expected amortization of intangible assets [Abstract]  
2020 $ 22,051
2021 14,745
2022 5,132
2023 2,839
2024 2,368
Thereafter 60,074
Total $ 107,209